[{"n": "Hematophagy", "u": "/e/animal-biology-and-behavior/hematophagy/", "s": "The practice of feeding on blood, from leeches to vampire bats."}, {"n": "Hematopoietic stem cell", "u": "/e/animal-biology-and-behavior/hematopoietic-stem-cell/", "s": "Stem cells that produce all blood cells through haematopoiesis."}, {"n": "Herpetology", "u": "/e/animal-biology-and-behavior/herpetology/", "s": "Branch of zoology studying amphibians and non-avian reptiles."}, {"n": "Ichthyology", "u": "/e/animal-biology-and-behavior/ichthyology/", "s": "The scientific study of fish, from ancient observations to modern taxonomy."}, {"n": "Imprinting (psychology)", "u": "/e/animal-biology-and-behavior/imprinting-psychology/", "s": "A rapid learning process during a critical developmental phase."}, {"n": "Malacology", "u": "/e/animal-biology-and-behavior/malacology/", "s": "Study of mollusks, the second-largest animal phylum."}, {"n": "Mammalogy", "u": "/e/animal-biology-and-behavior/mammalogy/", "s": "Study of mammals, from ancient Greeks to modern research."}, {"n": "Maternity den", "u": "/e/animal-biology-and-behavior/maternity-den/", "s": "A lair for birth and early nurturing of young."}, {"n": "Mating", "u": "/e/animal-biology-and-behavior/mating/", "s": "Pairing of organisms for sexual reproduction across many taxa."}, {"n": "Ornithology", "u": "/e/animal-biology-and-behavior/ornithology/", "s": "Branch of zoology dedicated to the study of birds."}, {"n": "Personal grooming", "u": "/e/animal-biology-and-behavior/personal-grooming/", "s": "Cleaning and maintaining body parts across species."}, {"n": "Population (biology)", "u": "/e/animal-biology-and-behavior/population-biology/", "s": "A group of same-species individuals separated by space, genetics, or demography."}, {"n": "Quadrupedalism", "u": "/e/animal-biology-and-behavior/quadrupedalism/", "s": "Locomotion using four legs for weight-bearing movement."}, {"n": "Rapid eye movement sleep", "u": "/e/animal-biology-and-behavior/rapid-eye-movement-sleep/", "s": "REM sleep is a paradoxical phase of sleep linked to dreaming."}, {"n": "Shoaling and schooling", "u": "/e/animal-biology-and-behavior/shoaling-and-schooling/", "s": "Social and coordinated swimming behaviors in fish."}, {"n": "Siesta", "u": "/e/animal-biology-and-behavior/siesta/", "s": "A midday nap tradition with ancient Roman and global roots."}, {"n": "Sleep in animals", "u": "/e/animal-biology-and-behavior/sleep-in-animals/", "s": "Sleep is a conserved biological state found across the animal kingdom."}, {"n": "Sociality", "u": "/e/animal-biology-and-behavior/sociality/", "s": "Sociality describes animal grouping and cooperative behavior."}, {"n": "Sociobiology", "u": "/e/animal-biology-and-behavior/sociobiology/", "s": "Field explaining social behavior through evolutionary biology and genetics."}, {"n": "Swarm behaviour", "u": "/e/animal-biology-and-behavior/swarm-behaviour/", "s": "Collective motion of self-propelled entities following simple rules."}, {"n": "Terrestrial locomotion", "u": "/e/animal-biology-and-behavior/terrestrial-locomotion/", "s": "Movement of organisms on land, studied for evolutionary adaptation."}]